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本文建立了有压腔式太阳能吸热器(PVSR)轴对称计算模型,运用蒙特卡罗光线追踪法(MCRT)模拟了二次聚光器(SC)与有压腔式吸热器(PVR)系统内聚光过程与光热转换过程,进而与计算流体与传热的有限容积方法(FVM)结合研究了高温高压吸热器内复杂耦合传热过程。在此基础上,进一步对比考察了考虑不同换热过程的换热机理,分析了安装倾角、入口工质温度与质量流量等重要参数对有压腔式吸热器换热性能的影响。
In this paper, an axisymmetric calculation model of PVSR with pressure chamber was established. The effects of secondary condenser (SC) and pressurized chamber heat absorber (PVR) were simulated by Monte-Carlo Ray Tracing Method (MCRT) In the system, the process of condensation and photothermal conversion is studied, and then the complex coupled heat transfer process in high temperature and high pressure heat absorber is studied in combination with the finite volume method (FVM) which calculates the fluid and heat transfer. On this basis, the heat transfer mechanism considering different heat exchange processes is further contrasted and investigated, and the influence of important parameters such as installation dip angle, inlet working temperature and mass flow on the heat transfer performance of pressurized cavity heat sink is analyzed.